20198853 has 12 divisors (see below), whose sum is σ = 30444960. Its totient is φ = 12880296.

The previous prime is 20198837. The next prime is 20198903. The reversal of 20198853 is 35889102.

It is not a de Polignac number, because 20198853 - 2⁴ = 20198837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20198803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48583 + ... + 48996.

It is an arithmetic number, because the mean of its divisors is an integer number (2537080).

Almost surely, 2^20198853 is an apocalyptic number.

20198853 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20198853 is a deficient number, since it is larger than the sum of its proper divisors (10246107).

20198853 is a wasteful number, since it uses less digits than its factorization.

20198853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97608 (or 97605 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 20198853 is about 4494.3134069622. The cubic root of 20198853 is about 272.3384133056.

The spelling of 20198853 in words is "twenty million, one hundred ninety-eight thousand, eight hundred fifty-three".